Intake Manifolds

For 2017-2019 Chevy/GMC With 6.6L Duramax L5P Diesel Engine

The Intake Manifold, also known as an inlet manifold, is a critical component in your diesel engine that distributes pressurized air from the turbocharger and intercooler evenly to each cylinder. Proper airflow distribution is essential for maintaining optimal combustion, engine performance, and fuel efficiency. Because the intake manifold directly affects how efficiently air enters the engine, it plays a key role in power output, throttle response, emissions, and overall reliability. 

Upgrading the intake manifold on your GM 6.6L Duramax can help improve airflow and support increased performance, especially on modified or heavily worked trucks. Common factory intake manifold drawbacks include airflow restriction, cracks, boost leaks, soot buildup, and underboost-related drivability issues. 

A high-flow aftermarket intake manifold is designed to provide smoother, more efficient airflow to the engine's cylinders while offering improved durability over many factory designs. Depending on your truck's configuration and supporting modifications, an upgraded intake manifold may help improve throttle response, support higher horsepower levels, reduce airflow restrictions, and contribute to lower exhaust gas temperatures (EGTs) under load. These upgrades are particularly beneficial for GM 6.6L Duramax owners who tow heavy loads, operate in demanding conditions, or are building a higher-performance engine combination. 

Whether you’re looking for a direct-fit factory replacement intake manifold or high-flow intake manifold to boost performance, XDP has what you need. Shop intake manifolds for your 2017, 2018 and 2019 GM 2500HD/3500HD with 6.6L Duramax